diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..28ac276 --- /dev/null +++ b/Makefile @@ -0,0 +1,88 @@ +# Legacy Bios build system +# +# Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> +# +# This file may be distributed under the terms of the GNU GPLv3 license. + +# Output directory +OUT=out/ + +# Source files +SRC16=floppy.c disk.c system.c clock.c serial.c kbd.c output.c boot.c +SRC32=post.c output.c + +# Default compiler flags (note -march=armv4 is needed for 16 bit insns) +CFLAGS = -Wall -Os -MD -m32 -march=i386 -mregparm=2 -ffreestanding +CFLAGS16 = -Wall -Os -MD -m32 -DMODE16 -march=i386 -mregparm=2 -ffreestanding -fno-jump-tables + +all: $(OUT) $(OUT)rom.bin + +# Run with "make V=1" to see the actual compile commands +ifdef V +Q= +else +Q=@ +endif + +.PHONY : all FORCE + +vpath %.c src +vpath %.S src + +################ Build rules +$(OUT)%.proc.16.s: $(OUT)%.16.s + @echo " Moving data sections to text in $<" + $(Q)sed 's/\t.section\t.rodata.*// ; s/\t.data//' < $< > $@ + +$(OUT)%.16.s: %.c + @echo " Generating assembler for $<" + $(Q)$(CC) $(CFLAGS16) -fwhole-program -S -combine -c $< -o $@ + +$(OUT)%.lds: %.lds.S + @echo " Precompiling $<" + $(Q)$(CPP) -P $< -o $@ + +$(OUT)%.bin: $(OUT)%.o + @echo " Extracting binary $@" + $(Q)objcopy -O binary $< $@ + +$(OUT)%.offset.auto.h: $(OUT)%.o + @echo " Generating symbol offset header $@" + $(Q)nm $< | ./tools/defsyms.py > $@ + +$(OUT)blob.16.s: + @echo " Generating whole program assembler $@" + $(Q)$(CC) $(CFLAGS16) -fwhole-program -S -combine -c $(addprefix src/, $(SRC16)) -o $@ + +$(OUT)romlayout16.o: romlayout.S $(OUT)blob.proc.16.s $(OUT)font.proc.16.s $(OUT)cbt.proc.16.s + @echo " Generating 16bit layout of $@" + $(Q)$(CC) $(CFLAGS16) -c $< -o $@ + +$(OUT)rom16.o: $(OUT)romlayout16.o + @echo " Linking $@" + $(Q)ld -melf_i386 -Ttext 0 $< -o $@ + +$(OUT)rom16.bin: $(OUT)rom16.o + @echo " Extracting binary $@" + $(Q)objcopy -O binary $< $@ + +$(OUT)romlayout32.o: $(OUT)rom16.offset.auto.h + @echo " Compiling whole program $@" + $(Q)$(CC) $(CFLAGS) -fwhole-program -combine -c $(addprefix src/, $(SRC32)) -o $@ + +$(OUT)rom32.o: $(OUT)romlayout32.o $(OUT)rombios32.lds + @echo " Linking $@" + $(Q)ld -T $(OUT)rombios32.lds $< -o $@ + +$(OUT)rom.bin: $(OUT)rom16.bin $(OUT)rom32.bin $(OUT)rom16.offset.auto.h $(OUT)rom32.offset.auto.h + @echo " Building $@" + $(Q)./tools/buildrom.py + +####### Generic rules +clean: + rm -rf $(OUT) + +$(OUT): + mkdir $@ + +-include $(OUT)*.d |